I had my eye on this system for ages and finally ordered it after watching Zach Even-Esh's videos and following his blog closely for a year. Coach Zach really got it right with his Underground Strength System. The man has experimented upon, revised and proven his methods by working with football players, wrestlers and other combat athletes in his home state of New Jersey. He has sought out mentorship from some of the best names in the strength and conditioning field. This manual is full of everything: explanations, programming, and photos. Zach offers an outstanding system that will work well in the gym but even better it is geared towards all kinds of training modalities including gym lifts, sandbags, sled-dragging, gruelling park sessions on the monkeybars, kettlebells and more. Kind of a bodybuilding meets strongman meets powerlifting meets gymnastics meets gladiator training sort of thing. If you are trying to develop rugged athleticism in yourself or your athletes or clients then the Underground Strength System is well-worth your time.